| Locality type: | Mine |
| Classification |
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| Species: | 'Heulandite Subgroup' (not an IMA approved species) |
| Formula: | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Heulandite Subgroup data |
| Locality Data: | Click here to view Cornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon County, Pennsylvania, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 132735 |
| Long-form Identifier: | 1:3:132735:9 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Heulandite Subgroup |
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| 46.0km (28.6 miles) | ⓘDyer Quarry, Gibraltar, Birdsboro, Berks County, Pennsylvania, USA |
| 49.4km (30.7 miles) | ⓘH&K Birdsboro Materials Quarry (Dyer Trap Rock Quarry; Hay Creek Trap Rock Quarry), Hay Creek, Birdsboro, Berks County, Pennsylvania, USA |
| 49.5km (30.7 miles) | ⓘUnnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA |
| 58.7km (36.5 miles) | ⓘFrench Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA |
| 79.1km (49.2 miles) | ⓘKibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery County, Pennsylvania, USA |
| 81.3km (50.5 miles) | ⓘHavre De Grace Quarry, Harford County, Maryland, USA |
| 86.5km (53.8 miles) | ⓘTeeter Quarry, Cumberland Township, Adams County, Pennsylvania, USA |
| 95.7km (59.5 miles) | ⓘDeshong's Quarry, Leiperville, Ridley Township, Delaware County, Pennsylvania, USA |
| 96.6km (60.0 miles) | ⓘFairfield Quarry, Fairfield, Hamiltonban Township, Adams County, Pennsylvania, USA |
| References |
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Cornwall Mines, Cornwall Borough, Lebanon County, Pennsylvania, USA